/***************************************************************************/
/*                                                                         */
/*  afwarp.h                                                               */
/*                                                                         */
/*    Auto-fitter warping algorithm (specification).                       */
/*                                                                         */
/*  Copyright 2006, 2007 by                                                */
/*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
/*                                                                         */
/*  This file is part of the FreeType project, and may only be used,       */
/*  modified, and distributed under the terms of the FreeType project      */
/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
/*  this file you indicate that you have read the license and              */
/*  understand and accept it fully.                                        */
/*                                                                         */
/***************************************************************************/


#ifndef __AFWARP_H__
#define __AFWARP_H__

#include "afhints.h"

FT_BEGIN_HEADER

#define AF_WARPER_SCALE

#define AF_WARPER_FLOOR(x)  ((x) & ~63)
#define AF_WARPER_CEIL(x)   AF_WARPER_FLOOR((x) + 63)


typedef FT_Int32 AF_WarpScore;

typedef struct  AF_WarperRec_
{
    FT_Pos x1, x2;
    FT_Pos t1, t2;
    FT_Pos x1min, x1max;
    FT_Pos x2min, x2max;
    FT_Pos w0, wmin, wmax;

    FT_Fixed best_scale;
    FT_Pos best_delta;
    AF_WarpScore best_score;
    AF_WarpScore best_distort;

} AF_WarperRec, * AF_Warper;


FT_LOCAL(void)
af_warper_compute(AF_Warper warper,
                  AF_GlyphHints hints,
                  AF_Dimension dim,
                  FT_Fixed * a_scale,
                  FT_Fixed * a_delta);


FT_END_HEADER


#endif /* __AFWARP_H__ */


/* END */